TAREA 15

CONBINACION DE NÚMEROS.
Encont´r en los numeros 3457 ,24 combinaci ones.
3457,3547,3745,3475,3574,3754,4375,4753,4537,4357,4735,4573,5347,5473,5743,5374,5437,5734,7345,7453,
7543,7435,7354,7534.